<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>

<body>
  <script>
    const p1 = new Promise((resolve,reject) => {
      try {
        console.log('开始请求A....');
        throw new Error("网络出现问题!!!!")
        setTimeout(() => {
          console.log('数据请求成功！');
          resolve({
            token:'abcbc'
          })
        }, 2000)

      } catch(e) {
        reject(e.message)
         
      }
    })
 

  //绑定then方法
  p1.then((v)=>{
    console.log('成功',v);
  },(rs)=>{
    console.log('失败',rs);
  })
  console.log('p1',p1);
  </script>
</body>

</html>